A date in my Agenda’s (macOS) right-hand calendar pane is marked as linking to a note (there’s a note icon to the right of the text with a tooltip on hover saying “Go to linked note”).
But that note is linking to an event that has long since been deleted.
If I highlight the note in question, and select Note > Unlink Calendar Event, I see a dialog warning me that “The association between calendar event “[Event Name]” and the Agenda link in the Calendar app will be removed”. But the event named in that dialog is the name of an event which was deleted many days ago.
So the link is superfluous, and the event no longer exists.
Shouldn’t that link have been destroyed when the event was deleted?
Why is Agenda storing details of events which have long been deleted everywhere else?